Material specification qq-a-268
A flanged cylindrical metallic item designed to be used on tubing to back up the flared end and to provide a bearing surface for the coupling nut, thereby reducing wear on the tubing flare. The inside diameter of the flanged end is countersunk to form a seat for the flare when assembled to a mating fitting.
NSN 6610-01-284-3236
NSN 5950-01-454-0992
NSN 5965-01-518-8824
NSN 6105-01-338-4715
NSN 2925-01-478-8191
NSN 5998-01-492-1207
NSN 5998-01-112-3595
NSN 6135-01-142-2417
NSN 5960-00-918-2369
NSN 6220-01-599-4516
NSN 5945-01-652-3013
NSN 6645-01-205-0549